Warner Music Group Corp. has been subpoenaed by the New York Attorney General in connection with an ongoing antitrust investigation into the pricing of digital music downloads, the company said in a securities filing on Friday. The disclosure of the subpoena appeared to be the first time that the probe by New York Attorney General Eliot Spitzer of the market for song downloads has come to light.

Warner said it received the request for information on Tuesday. "As part of an industrywide investigation concerning pricing of digital music downloads, we received a subpoena from Attorney General Spitzer's office as disclosed in our public filings. We are cooperating fully with the inquiry," said Warner Music Group spokesman Will Tanous.